Vault-lining.



No. 880,020. VPJLTLENI'ED FEB. 25, 1908.

J. L. GRA-SS. A VAULT LINING. APPLICATION FILED JULY13.1907.

2 SHEETS-SHEET 2.

.liwve invented certain new and Vproveniente in Vault-Innings, of which the' lUNITED sTnTns TATENT onrron.

JACOB L. GRASS, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE AMERICAN BANK TROTECTION COMPANY, OE MINNEAPOLIS, MINNESOTA.

VAULT-LIN IN G.

To all whom it may concern:

Be it known that I, JACOB L. G/eAss, of Minneapolis, Hennepin county, Minnesota,

' useful Imfollowing is a specification.

The object of my invention is to provide means at the joints of the vault lining plates for sounding an alarm should any unauthortem ized person tamper with the plates or att to obtain access to the vault. l T e invention consists generally in a curved plate arranged to cover the joint between contiguous vault lining platesand ar ranged to close an alarm circuit should anyone bend or bucklethe plates at the joint in attempting to obtain access to the vault.

In the accompanying drawings, forming part of this specification, Figure l is an elevation of a portion of a vault lining with the invention applied thereto. Fig. 2 is a horizontal sectional View of the same illustrating` the manner of applying the invention between the j oints in the side walls of the vault lining and at the corners. Fig. 3 ,is an elevation illustrating` .the plates composing the walls ofl the vault lining and showing the means for securing them together. Fig. 4 is a horizontal sectional view illustrating the manner of insulating the curved connecting plate from thwall lining plates. Fig. 5 illustrates the closing of the alarm circuit through the connecting plate when pressure is applied to the outside of the vault lining.

'In the drawing, 2 2 represents the inner plates of the vault lining and 3-3 the outer plates. The inner plates are separated from the outer ones by sheets of non-conducting material 4 inserted between them, the metallie Wall plates and the insulating material being united by the machine described in PatentNo. 781,365, issued January 31, 1905. The interior of the vault to be protected is lined with these plates.

The outer lining plates lap by the inner plates and the interposed insulating sheets, as shown in Fig. 5; and are provided with slots 5 into which the hooked ends 6 oi' clips 7 are inserted. A metallic bar 8 is arranged vertically on the outside of the vault with its edges lapping by the contiguous edges ot' the outer plates and bolts 9 are inserted into Specieation of Letters Patent.

Application filed July 13. 1907. Serial No. 383.554.

plates 2 and the inner Patented Feb. 25, 190s..

the bar 8 and have threaded inner ends and, lock nuts 10 between which and the bar the clip 7 is secured. These bolts are arranged at suitable intervals. A curved circuit closing plate 11 is provided on the inside of the vault lining with its edges lapping by the ends of the vbolts 9 pass through holes 12 in the said circuit closing plate and through insulating washers 125 that are fitted within recesses 14 in said plate. Lock nuts 15 secure the circuit closing` plate in place on the joint between the vault plates. The circuit closing plate and the bar 8 will be connected at intervals by the bolts 9 but will be insulated from one another, and the inner lining plates will be insulated by the sheets between them from the outer lining plates.

As indicated in F ig. 4 the outer lining plates and the bar S will be on one side of the alarm circuit A while the inner plates and the circuit closing plate 11 will be on the other side, and normally this alarm circuit will be broken by the' insulation between the inner and outer lining plates. The connection of an outer plate with an inner one asby a drill or other tool of conducting material will close the alarm circuit. At intervals on the edges of the outer plates 3 contact points 16 are provided, arranged to project inwardly and having their inner ends near but normally out of contact with the plate 11. When, however, pressure is applied to the outside of the vaultflining, as indicated in Fig. 5, the contact points 16 will touch thc circuit closing plate 11 and the circuit A will immediately be closed 'and the alarm sounded Any attempt therefore to. penetrate the vault by tampering with'the walls and lining would be instantly detecte-d` At the corners of the vault liningan angle bar 17 is provided on the outside having its flanges'loiu` ing on the outer lining plates and secured hy bolts corresponding to those described, to the inner connecting plate which is simil ur to the one described except that it is reversed so that its concave tace is on the inside and its convex face toward the outside of the vault. The connecting bolts are insulated from the inner plate in the saine manner as described with reference to the plate 11 in Fig. 4. The plates 11 have their edges contacting with l nected with. said plates the the inner lining plates apd as these are painted or covered with shellac, bearing points 18 are provided on the edges oi the plates and arrangedjto contact with small areas of the wall plates fromwhich the insulating coating is removed when 'the vault lining is constructed. All the joints between the lining plates will be coveredv by the curved circuit closing plates and the lining will be eifectually protected,- as anyattempt to penetrate it with a drill or other 'tool or by pressure on the plates will cause the'alarm circuit to be closed.

joint betwen said lining plates and means whereby when pressure is applied to bend or buckle the said lining plates at the joints said alarincircuit will be closed through said circut closing plate, substantially 'as-l described,

3. A vault lining comprising inner 4and outer plates insulat/ edironrl one another, an

alarm circuit having its terminals connected' respectively, and ncrmally openL and circuitv closing means lapping by the joints of said lining plates, whereby when pressure is applied to bend or buckle the said lining plates said alarm circuit will be gclosed. 4. A vault lining comprising innler and outerplates 'insulated from one another, an alarm circuithaving its terminals connected with said plates respectively, a curvedy circuit closing plate arranged on the joint between the lining plates and in circuit with said inner lining plates and insulated from said outer lining plates, and means whereby when pressure is applied to bend or buckle witlusaid plates the said lining plates the circuit will be closedr through said curved plate.

5, A vault lining comprising inner and oiiterplates having an insulating material between them and an alarm circuit having its terminals lconnected with said plates 'respectively and normally open, curved circuit closing plates in circuit with the inner lining plates and insulated from the outer lining plates, and contact points formed on the outer lining plates and arranged to contact with said curved plate when 'the wall is bent or pressed out of its normal position,y

esoneri 6. 'A vault lining comprising inner and outer plates insulated from one another, an alarm circuit connected'with said plates and normally open, bars arranged'on the joint between said plates on the outside ot said lining, curved circuit closin plates arranged on the joints on the inside o? the lining, bolts connecting said bars and circuit closing plates and insulated normally in circuit with said inner lining plates, and means whereby the circuit will be closed between said circuit closing plates and said outer lining plates when said Wallis forced out of its normal position.

v7. A vault lining comprising inner and outer plates insulated from one another, an angle bar provided at the corner and covering the joint between contiguous lining walls on the outside, a curved plate iitting into the corner on the inside, and bolts connecting said bar and plate, substantially as described.

8. A vault lining comprising a series of plates arranged substantially end to end and an alarm circuit connected therewith and normally open, and relation to said plates that when pressure is applied to bend or buckle the lining plates said alarm circuit will be closed.

9. A vault lining comprising plates having joints between them to permit the plates to bend or buckle and an alarm circuit connected with said plates and normally open, and means so arranged in relation to said plates that ,when pressure is applied to bend or buckle the plates at the joints the said alarm circuit will be closed.

10. A metallic lining for vaults in combi nation with an alarm circuit havingits terminals connected to said lining and the circuit normally broken through said lining, and

from the latter, said bars being means so arranged 1n means s o arranged in relation to said linlng that when pressurer is applied to bend or buckle the lining Isai circuit will be closed.

1 1, A vault lining made up of sections each comprising inner and outer plates of comarativelr thin sheet metal adapted to be litted to the inner walls/ofI a vault, the sections being arranged to permit deflection between adjacent sections, a normally open alarm circuit having its terminals connected to said lplates respectively, and means controlled by movement of said plates at, their point of dellection to close the alarin cir'cuit. 12. A vault lining made up of sections each comprising inner and outer plates adapted to beiffitted on the -inner walls of a vault, said sections being arranged with joints between thcm, a normally open alarm circuit having its terminals connected to said plates respectively, and means arranged to bridge the joint between said plate sections and close said alarm circuit when said plates vare bent or buckled inwardly.

13. A Vault lining comprising plates arln witness whereof, l have hereunto set ranged in sections so as to permit deflection my hand this 10th day of July, 1907.

between adjacent sections, a normally open C alarm circuit connected therewith,and means JACOB L GRAS' 5 controlled by movement of said plates at Witnesses:

their point of `deflection to close said alarm J. B. ERA, circuit.

J. H. BALDWIN. 

